MyPaint, created by Martin Renold, is a free raster painting program focused on uninterrupted sketching and expressive brushwork. The app provides an infinite canvas and a highly configurable procedural brush engine that emulates charcoal, pencil, and ink for natural strokes. Its minimalist interface hides palettes for a distraction-free workspace while preserving layer blending and symmetry modes, and it supports pressure-sensitive tablets. Digital painters, concept illustrators, and hobbyists gain a responsive, tablet-oriented tool for rapid ideation and long-form illustration without predefining image dimensions.

Designed for continuous mark-making, not photo retouching

The app centers on raw painting gestures, giving priority to brush interaction over pixel-level editing. Its procedural brush engine, libmypaint, models media such as charcoal, pencil, and ink and responds to pressure, tilt, and velocity for variable strokes. That behaviour supports uninterrupted ideation because the canvas expands as you work, eliminating the constraint of a preset page size and letting drawings evolve without interruption.

OpenRaster foundation and shared brushes connect to other tools

The app uses OpenRaster (.ora) as its native file type to preserve layers, and it exports to PNG and JPEG for distribution. Because the libmypaint engine is a standalone library integrated into projects like GIMP and Krita, brush presets and procedural profiles can move between applications. Quick list of common interchange options:

• OpenRaster (.ora) for layered work
• PNG/JPEG for flattened exports

Hidden workspace sharpens focus but curtails complex edits

The minimalist interface can be hidden entirely for full-screen painting, reducing distractions during long sessions. Layer management exists with blending modes and symmetry painting, which helps composition. Although that simplicity suits fast sketching, advanced users note the absence of selection and transformation tools common in other editors, which constrains precise compositing and pixel-level adjustments for production-ready assets.

Lightweight, cross-platform performance for tablet-driven workflows

The tool runs on Windows, Linux, and macOS builds and is described as fast and lightweight, so it responds well to tablet input during rapid sessions. It supports pressure-sensitive tablets and gives a natural stroke feel, though it can be used with a mouse. Because the brush engine is widely adopted, creators can assemble a toolkit of reusable brushes across compatible apps if they track asset provenance.

A focused choice for painters who prioritize marks over pixel manipulation

The app suits artists who put direct brushwork and ongoing sketching at the center of their process; its pared back approach supports rapid visual thinking. Although those priorities limit precise image construction workflows, creators who prefer instant, tactile drawing and reusable procedural brushes get a coherent toolset for ideation and long-form drawing. Recommend it for concept work and exploratory painting projects.